249620 has 24 divisors (see below), whose sum is σ = 599424. Its totient is φ = 85536.

The previous prime is 249607. The next prime is 249647. The reversal of 249620 is 26942.

249620 = T₄₇ + T₄₈ + ... + T₁₁₆.

It is a congruent number.

It is an unprimeable number.

249620 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 752 + ... + 1031.

It is an arithmetic number, because the mean of its divisors is an integer number (24976).

2²⁴⁹⁶²⁰ is an apocalyptic number.

249620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249620 is an abundant number, since it is smaller than the sum of its proper divisors (349804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249620 is a wasteful number, since it uses less digits than its factorization.

249620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799 (or 1797 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 249620 is about 499.6198554902. The cubic root of 249620 is about 62.9641183094.

The spelling of 249620 in words is "two hundred forty-nine thousand, six hundred twenty".